Hypertherm, Safety, A plasma arc can cause injury and burns – Hypertherm Powermax30 Operator Manual User Manual
Page 17: Arc rays can burn eyes and skin
Hypertherm
1-5
SAFETY
11/08
Instant-On Torches
Plasma arc comes on immediately when the torch
switch is activated.
A PLASMA ARC CAN CAUSE INJURY AND BURNS
The plasma arc will cut quickly through gloves
and skin.
• Keep away from the torch tip.
• Do not hold metal near the cutting path.
• Never point the torch toward yourself or others.
Eye Protection
Plasma arc rays produce intense visible and invisible (ultraviolet and infrared) rays that can
burn eyes and skin.
• Use eye protection in accordance with applicable national or local codes.
• Wear eye protection (safety glasses or goggles with side shields, and a welding helmet) with appropriate
lens shading to protect your eyes from the arc’s ultraviolet and infrared rays.
Skin Protection
Wear protective clothing to protect against burns caused by ultraviolet light, sparks and
hot metal.
• Gauntlet gloves, safety shoes and hat.
• Flame-retardant clothing to cover all exposed areas.
• Cuffless trousers to prevent entry of sparks and slag.
• Remove any combustibles, such as a butane lighter or matches, from your pockets before cutting.
Cutting Area
Prepare the cutting area to reduce reflection and transmission of ultraviolet light:
• Paint walls and other surfaces with dark colors to reduce reflection.
• Use protective screens or barriers to protect others from flash and glare.
• Warn others not to watch the arc. Use placards or signs.
ARC RAYS CAN BURN EYES AND SKIN
Arc current
(amps)
Minimum protective
shade number
(ANSI Z49.1:2005)
Suggested shade
number for comfort
(ANSI Z49.1:2005)
OSHA 29CFR
1910.133(a)(5)
Europe
EN168:2002
Less than 40 A
5
5
8
9
41 to 60 A
6
6
8
9
61 to 80 A
8
8
8
9
81 to 125 A
8
9
8
9
126 to 150 A
8
9
8
10
151 to 175 A
8
9
8
11
176 to 250 A
8
9
8
12
251 to 300 A
8
9
8
13
301 to 400 A
9
12
9
13
401 to 800 A
10
14
10